Oil-pump.



A. L. HAWKESWORTH.

OIL PUMP. APPLICATION FILED JULY 10,1918.

1,296,077. Patented Mar. 4,1919;

A. L. HAWKESWORTH.

OIL PUMP- APPLICATIOH FILED IULY 10.11MB.

ARTHUR L. HAWKESWORTH, OF BUTTE,.MONTA1\TA.

OIL-PUMP.

To all whom it may concern Be it known that I, ARTHUR L. HAwKEs- WORTH, a citizen of-the United States, resida had tothe accompanying drawings, form- 10 ing a part hereof.

" hepresent invention isdirected to 1m provements in oil pumps. (though of course i not necessarily restricted thereto) and particularly to pumps of the reciprocatin piston type, the. object of the invention sing to construct a pump which shall be simple, the same being composed in the main of standard fittings; one which shall be kept primed at all times thereby preventing the drying out of the leather or equivalent cuppacking entering into the construction of the piston; one in which the piston makes a tight joint with the walls of the cylinder or pump barrel; one capable of ready attachment .to the tank or container from which the oil is to be pumped; one making adequate provision for filtering the oil before the oil enters the pump cylinder; and

one possessing further and other advantages betterapparent from the following detailed description in connection with the accompanyinggdrawings in which- Figure 1 represents a side elevation of the pump and thetank cover or removable head and filter screen thereof, the tank being in vertical middlesection; Fig. 2 is a view of the pump and tank cover at right angles to Fig. 1; Fig.3 is a top plan of the tank cover detached, showing the portions of the pump appearing above the cover,and show ing the filter screen suspended from the 1 cover; Fig. 4 is an elevation of the pump and tank cover or head taken at right angles to Fig. 2 and'from the side opposite to Fig. 1; Fig. 5 is a detached elevation of the pump barrel or cylinder and operating piston or plunger therefor, with a part of the cylinder Zwall brokenaway; Fig. 6 is a top plan of the reinforcing washer for the flange of the filter screen, showing the swin ing lid therefor; Fig. 7 is a vertical middle section of theintake fitting of the suction member of the pump showing the filtering screentherein; and Fig. 8 is a vertical sec- .3 'tional detail 'showmg the construction of Specification of Letters Patent.

Patented Mar. 4, 1919.

Application filed July 10, 1918. Serial No. 244,217.

the filter screen bag carried by the removable cover or head of the tank.

'Referring to the drawings, 1 represents a tank or container open on top and provided on the inside near its upper end with a flange formed by the horizontal leg of an angle bar 2, said flange serving to support and have bolted thereto the removable cover or head 3 of the tank as shown. The pumpbarrel or cylinder 4 terminates at the top in a hollow fitting or cap .5 provided with a peripheral vent opening 0 (Fig. at), said cap being directly securable to the cover 3, a washer 6 being preferably interposed between the cover. and the heads b of the cap screws by which the parts are secured together., Traversing the cylinder 4L is a piston rod 7 terminating at the upper end in i a handle 8, the inner end of the rod carrying the leather or equivalent cups 9, 10, placed back to back, the upper cup being provided with a washer 11 terminating substantially flush with the edge of the cup, andthe lower cup bein provided with a. washer 12 which exten s a suitable distance below the edge of the cup, the extended washer being necessary to prevent the bottom cup 10 from striking or fouling the inner wall of the reducer 13 secured to the lower end of the pump barrel or cylinder 4:. The members 9, 10, 11, and 12 collectively form a piston of which the cups 9, 10, may be considered as the packing elements, the washers 11 and 12, being held in position by the nuts a, M or in any other suitable mechanical manner. I

The reducer l3 isprovided with a nipple 14 which connects itto a T 15, one end of the horizontal leg of said T being coupled by means of a nipple .16 to an elbow 17, the opposite end being similarly coupled by meansof a nipple 18 to\an elbow 19,-the latter connecting through a horizontal nipple 20 with the horizontal discharge check-valve 21;areducer 2'2 connecting the same with a nipple 23 which is coupled to an elbow 24 from which leads upward (through the cover 3) the discharge pipe 25 terminating at the top in the'goose-neck 25. The elbow 17 is coupled to a vertical nipple 26 which terminates at thetop in an elbow 27 coupled in turn to a similar elbow 28 which, by means ofa nipple 29 is connected to the vertical intakecheck valve 30. The casing of the valve 30 is coupled by means of a nipple 31 to the intake fitting or half-pipe union 32 provided with a screen 33.

The tank cover 31s, provided with a-central opening through which there is suspended from the cover a Wire screen bag 3 1;

stiffening flange 35, the wirebeing folded over the flange as shown (Fig. 8). The wire screen is adaptecb-to 'reeeive a corre- 10 spondingly shaped filter cloth 36 whose free end is li'kewiseffoldecl over 'thewireand over the- -fiange 35, the parts being" subsequen'tly clamped together; by* a stiffening ring? or 'reinfor'cino' washer -37, suitable 5 l screws 38 holdin tie'parts together. "The comp'osite lfilter 'ag thus formed is then dropped through the cover 3, the flanged portion 35 "(with its Washer 37)-l0osely' resting-on the cover as; shown and holding the filter in "position above" theoil in the tank.

' One of the fastening screws '(38) may "serve as a pivot'for' amwingingdid 39 with which-the filter screen may be provided,

' saidflid being swung-1aroundon-top of the wheirbeingtaken dowiri-nto a mine orsimilar places where thepnmpfis to be used. Preferably the lid 39 is providedwith a lug or finger hold it by which thesame may be 0 manipulated. The" lid 5 39 may be removed when t1ie"screen*is;i11' position onthe cover swungto one sideias shown-in Fig; 4.

"The oil sup'plied to-the tank 1 may be e ther new, orit ma Fbewasteoil from dif- 'fei ent'" machinery requir in filtration; the

tank l being placed-below tie machinery to permit the waste oil-"to drain thereinto' through the-"fi1ter bag-34, 36. The "filtered oil is then pumped through suitable Pipes 1 (not 'sho'wn) into a tank-above (not shown). ln mines and s'hops the goose neck delivery or drippings b'eing canght in'the' filter and retl'irned tothe tank. The tank 1' takes the place of old style cans provided with a'fau- "cet at the -bott'om and which isj often left openorsgets knockedopen allowing the oil to goto waste. Where the filtefBL, 36, is

5 0 employed the 'screen-33 of course is' not necessary, but the'screenis availed of'in cases 1* Where the pump is used for drawing oil from i thetank or from; a "barrel Without a filter. Again, should the filter'3l, 36,'bec0me "punc- 5 5 l t'ured- 1 for any 5 reason, the screen 33 would V m fsho'wn f conventionallyand without any attempt at 'detailS. The-parts 17; 26, 27, l: 1 28,29, 30,31 and 32 emf-collectively an inp j verted; U -shaped suction member a the erown -"pr-highestpoint of which-is considerably above-theintake -end ofthe fitting 32 and 21*011 the downstroke. change the'details ofthe pump iin. many: parthe check valve 30 at all times maintaining ,in the said memberand in the bottom of the cylinder a spflicient quantity of oil to keep the pump well primed, thus preventing the the free end of which is formed with a a.

drying out of the leather cups 9 and 10 when the pump is idle. It is obvious of course (Fig; 5) that on the downstroke" the'cup 10 opera'testoexpel the oil from the cylinder or barrel and that on the upstroke the cup 9 prevents outside airfrom enteringthe barrel below the piston, the vacuum tthuswformed belowthe piston icausing-uthe; oil from the 1 tank to enter the cylinder 4:: past theicheck valve 30, to b expelledpast ithe check-Valve Obviously Irmay ticulars without a: departurefrom thetzspirit of the invention,- and I: may muse :the/ pump for operating on any liquids whatsoeyer, the :same not being restricted to the pumping of eil.

Having u described my invention' what I claim :is:

1. In a pump of the'characterdescribed, a-snitable cylinder, a ilQClPI'OCfl-tlllg piston therefor, air inverted U-shaped suction member connected to'theintake end iofrthe cylinder, the-intakeleg of theisuction wmember :beingprovidedwith a t 'alve positioned between theifreeiend of said rlegfandi the crown of the-suction member, the said crown being disposed above the lowest point reached by the piston, a: discharge valve *atthebottomof the cylinder, and a discharge pipe leading from said valve.

I 2. In a pump ofthe character described,

a suitable cylinder, a piston therefor, an in verted- U shaped suctlon member," a reducer connecting-said member to the intakegend "of the cylinder, the 1 intake leg of the suction member being provided with' airintake-valve positioned betweenthe free end ot said leg valve coupled to "the reducen and a discharge pipe leading from said valve.

1 :pump of the character described, comprlsing a'cyllnder, a piston'therefor, a reducer terminating the lower end-20f the -cylinder; a T coupledto the reducer, an in verted U-shaped suction member coupled to one 1 end of. the horizontal leg of 1 the" T, the

"couple'd to said pipei and a discharge pipe leading from said fva ve," the iparts operating substantiallya as, and? for "their purpose set forth. V

4; In a pump iofthe-charaeter describ'ed, a

suitablecylinder, a piston therefor, a piston Y and the-crown of-said suction'member, the V said crown =be1ng d sposed above i the lowest point reached" by thep1ston, a discharge rod for the piston, an inverted U-shaped suction member connected to the intake end of the cylinder, the intake leg of the suction member being provided with an intake valve positioned between the free end of said leg andthe crown of the suction member, the said crown being disposed above the lowest point reached by the piston, a discharge valve at the bottom of the cylinder, a dis charge pipe leading from said valve to a Copies of this patent may be obtained for five cents each, by addressing the Commissioner Washington, D. G.

point beyond the upper end of the cylinder, and a rigid connecting member between the discharge pipe and said upper end of the cylinder.

In testimony whereof I eflix my signa- 15 of Patents, 

